/*
 * Copyright 2016 requery.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.requery.sql;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

@SuppressWarnings("MagicConstant")
class StatementCachingConnection extends ConnectionDelegate {

    private final PreparedStatementCache statementCache;

    StatementCachingConnection(PreparedStatementCache cache, Connection connection) {
        super(connection);
        this.statementCache = cache;
    }

    @Override
    public PreparedStatement prepareStatement(String sql,
                                              int resultSetType,
                                              int resultSetConcurrency) throws SQLException {
        return prepareStatement(sql, resultSetType, resultSetConcurrency, getHoldability());
    }

    @Override
    public PreparedStatement prepareStatement(String sql,
                                              int resultSetType,
                                              int resultSetConcurrency,
                                              int resultSetHoldability) throws SQLException {
        PreparedStatement statement = statementCache.get(sql);
        if (statement != null &&
            statement.getResultSetType() == resultSetType &&
            statement.getResultSetConcurrency() == resultSetConcurrency &&
            statement.getResultSetHoldability() == resultSetHoldability) {
            return statement;
        }
        statement = super.prepareStatement(sql, resultSetType,
                resultSetConcurrency, resultSetHoldability);
        return statementCache.put(sql, statement);
    }
}
